Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Neville John Mattingley0
Esam Kronfli0
Date of Patent
January 23, 2007
0Patent Application Number
105209430
Date Filed
June 23, 2003
0Patent Primary Examiner
Patent abstract
A process for producing a porous polymeric structure which process comprises preparing a solution comprising a polymer which comprises vinylidene fluoride in a solvent/non-solvent mixture; holding the solution at an elevated temperature until the polymer is completely solvated; casting the solution to form a thin layer; and drying the thin layer to form a membrane. The polymer is dispersed in the non-solvent before addition of the solvent, when preparing the solution, to prevent microgel formation. The prolonged solvation at elevated temperature provides a stable solution, and enables membranes of controlled porosity to be formed.
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